[PM-32161] Remove all emails when email list field is cleared and send is saved (#18959)

* add new validation criteria to prevent authType.Email with an empty emails field

* simplify validation logic

apps/web/src/locales/en/messages.json

@@ -12866,6 +12866,9 @@
   "enterMultipleEmailsSeparatedByComma": {
     "message": "Enter multiple emails by separating with a comma."
   },
+  "emailsRequiredChangeAccessType": {
+    "message": "Email verification requires at least one email address. To remove all emails, change the access type above."
+  },
   "emailPlaceholder": {
     "message": "user@bitwarden.com , user@acme.com"
   },